Вычисли и сократи дроби: 3/5 + 1/7

Конечно, давай сложим дроби! Вот ответы: 1) $$\frac{3}{5} + \frac{1}{7} = \frac{3*7 + 1*5}{5*7} = \frac{21 + 5}{35} = \frac{26}{35}$$ 2) $$\frac{17}{10} + \frac{3}{100} = \frac{17*10 + 3}{100} = \frac{170 + 3}{100} = \frac{173}{100}$$ 3) $$\frac{56}{34} + \frac{12}{68} = \frac{28}{17} + \frac{6}{34} = \frac{28*2 + 6}{34} = \frac{56 + 6}{34} = \frac{62}{34} = \frac{31}{17}$$ 4) $$\frac{13}{15} + \frac{2}{5} = \frac{13 + 2*3}{15} = \frac{13 + 6}{15} = \frac{19}{15}$$ 5) $$\frac{45}{17} + \frac{4}{7} = \frac{45*7 + 4*17}{17*7} = \frac{315 + 68}{119} = \frac{383}{119}$$ 6) $$\frac{34}{7} + \frac{11}{56} = \frac{34*8 + 11}{56} = \frac{272 + 11}{56} = \frac{283}{56}$$ 7) $$\frac{11}{170} + \frac{13}{17} = \frac{11 + 13*10}{170} = \frac{11 + 130}{170} = \frac{141}{170}$$ 8) $$\frac{23}{6} + \frac{34}{65} = \frac{23*65 + 34*6}{6*65} = \frac{1495 + 204}{390} = \frac{1699}{390}$$ 9) $$\frac{6}{13} + \frac{3}{17} = \frac{6*17 + 3*13}{13*17} = \frac{102 + 39}{221} = \frac{141}{221}$$ 10) $$\frac{17}{51} + \frac{34}{5} = \frac{1}{3} + \frac{34}{5} = \frac{5 + 34*3}{15} = \frac{5 + 102}{15} = \frac{107}{15}$$